Merge pull request #947 from rittikadeb/home-security-system

Added Home Security System

IOT(Internet of Things)/Intermediate/Home Security System/README.md

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+# Home Security System
+
+
+## Aim
+
+To design a Arduino Based Home Security System
+
+
+## Purpose
+
+This low-cost and effective system helps you to protect your house from thieves/intruders.
+
+
+## Components Required
+
+* Arduino UNO
+* Breadboard
+* Connecting Wires
+* LCD 
+* Potentiometer
+* Keypad
+* PIR Sensor
+* Servo Motor
+* Buzzer
+* 1 Red LED
+* 1 Green LED
+* 4 Resisitors
+
+## Short Description 
+
+In this project, we are using PIR Motion Sensor Module as an infraredsensor that generates electric charge when exposed in heat and sends a signal to Arduino. Accordingly the Arduino displays the status on LCD screen and start buzzing the buzzer and glows the LEDs.
+
+## Workflow of the Project
+
+- The servo motor acts like the lock
+- When ths system is not locked the green LED is turned on and a LOCK INACTIVE message is displayed on the LCD Screen.
+- When the system is locked by giving the default password through the keypad:
+  - Servo rotates
+  - Secured message is displayed on the LCD
+  - When any movement is detected by the PIR Sensor:
+    - Red LED is turned on
+    - Warning message is displayed on the LCD
+    - Buzzer is turned on
+- When again the default password is inputed :
+  - Servo rotates back to the origial position
+  - Lock is disarmed 
+  - Message displayed on the LCD screen.
+
+
+## Setup instructions
+
+- Design and assemble the circuit as shown in the image.
+- Check the connections of all the components.
+- Upload the code provided.
+- Start the simulation
+
+## Output
+
+![Circuit](https://user-images.githubusercontent.com/76259897/156227022-d60e95c8-9fc1-493c-b6eb-9fd0540929a6.png)
+
+
+[Simulation Video](./Images/home_security_system.mp4)
+
+
+
+

IOT(Internet of Things)/Intermediate/Home Security System/home_security_system.cpp

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+#include <LiquidCrystal.h> // Include library for LCD.
+#include <Keypad.h> // Include keypad library.
+#include <Servo.h>
+
+const byte rows = 4; 
+const byte cols = 4; 
+
+// Define the keymap.
+char keys[rows][cols] = {
+  {'1','2','3','A'},
+  {'4','5','6','B'},
+  {'7','8','9','C'},
+  {'*','0','#','D'}
+};
+
+byte rowPins[rows] = {2,12,11,10}; // Keypad ROW0, ROW1, ROW2 and ROW3 are connected to these Arduino pins.
+byte colPins[cols] = {9,8,7,6}; // Keypad COL0, COL1, COL2 and COL3 are connected to these Arduino pins.
+
+Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, rows, cols); // Create the keypad.
+
+LiquidCrystal lcd(A0, A1, A2, A3, A4, A5);
+
+int sensor1 = 13; 
+int state = 0; // State of the PIR sensor.
+bool motionDetected = false;
+bool locked = false; // Defines whether the program should listen for the data from sensor and respond to it or not.
+
+int ledGreen = 3; 
+int ledRed = 4; 
+
+Servo servo;
+
+int buzzer = 5; 
+
+String passcode = "14"; // Default passcode 
+String input = ""; // Input that will be read from keypad 
+
+void setup() {
+  pinMode(sensor1, INPUT); 
+  pinMode(ledGreen, OUTPUT); 
+  pinMode(ledRed, OUTPUT); 
+  pinMode(buzzer, OUTPUT);
+  servo.attach(1);
+  lcd.begin(16,2); 
+}
+
+void loop() {
+  if(locked == false){ // Check whether system is not locked.
+    digitalWrite(ledGreen, LOW); 
+    lcd.setCursor(0,0);
+	lcd.print("Lock Inactive"); 
+    servo.write(0);
+    char key = keypad.getKey(); // Read key from keypad.
+    if(key && key != '*'){ // Check whether key has been read from keypad and is not equal to "*" which is submit key.
+        input += key; // Read passcode from keypad and store it in input variable.
+    }
+    if(key == '*'){ // Check whteher "*" submit key has been pressed on keypad.
+      if(passcode == input){ 
+        locked = true; // Lock the system 
+        input = ""; // Clear input variable.
+        lcd.clear();
+        lcd.setCursor(0,0);
+        lcd.print("Secured");
+        lcd.setCursor(0,1);
+        lcd.print(":D");
+        servo.write(90);
+        delay(3500);
+        lcd.clear();
+      }
+    }
+  }
+  else if(locked == true){ // Check whether system is locked.
+    char key = keypad.getKey(); // Read key from keypad.
+    if(key && key != '*'){ // Check whether key has been read from keypad 
+        input += key; // Read passcode from keypad and store it in input variable.
+    }
+    if(key == '*'){ // Check whteher "*" submit key has been pressed on keypad.
+      if(passcode == input){ 
+        locked = false; // Unlock the system 
+        input = ""; 
+        lcd.clear(); 
+        lcd.setCursor(0,0);
+        lcd.print("Disarmed");
+        lcd.setCursor(0,1);
+        lcd.print(":(");
+        delay(3500);
+        lcd.clear();
+      }
+    }
+    state = digitalRead(sensor1); 
+    delay(100); 
+    if(state == HIGH){ 
+      digitalWrite(ledGreen, LOW); 
+      digitalWrite(ledRed, HIGH); 
+      lcd.clear(); 
+      lcd.setCursor(0,0);
+      lcd.print("Movement Detected!");
+      lcd.setCursor(0,1);
+      lcd.print("Alert!!"); 
+      alarm(); 
+      delay(50); 
+      lcd.clear(); 
+
+    }
+    else{ 
+      noTone(buzzer);
+      lcd.setCursor(0,0); 
+      lcd.print("Lock Active"); 
+      digitalWrite(ledGreen, HIGH); 
+      digitalWrite(ledRed, LOW);
+    }
+  }
+}
+void alarm(){ 
+    tone(buzzer, 500); 
+
+
+}

IOT(Internet of Things)/Intermediate/Home Security System/requirements.txt

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+| Component         | Quantity      |
+| ------------------| ------------- |
+| Arduino UNO       |  1            |
+| Breadboard        |  1            |
+| Connecting Wires  | 38            |
+| LCD               |  1            |
+| Potentiometer     |  1            |
+| Keypad            |  1            |
+| PIR Sensor        |  1            |
+| Servo Motor       |  1            |
+| Buzzer            |  1            |
+| Red LED           |  1            | 
+| Green LED         |  1            |
+| Resisitors        |  4            |

IOT(Internet of Things)/README.md

@@ -30,7 +30,7 @@
 
 | S-No. | Projects | S-No. | Projects | S-No. | Projects |
 |:--:|:--:|:--:|:--:|:--:|:--:|
-| 01. | [Gas leakage detection](https://github.com/Kushal997-das/Project-Guidance/tree/main/IOT(Internet%20of%20Things)/Intermediate/gas%20leakage%20detection) | 02. |  [Vehicle Accident Prevention System](https://github.com/rittikadeb/Project-Guidance/tree/vehicle-accident-prevention/IOT(Internet%20of%20Things)/Intermediate/Vehicle%20Accident%20Prevention%20System)
+| 01. | [Gas leakage detection](https://github.com/Kushal997-das/Project-Guidance/tree/main/IOT(Internet%20of%20Things)/Intermediate/gas%20leakage%20detection) | 02. |  [Vehicle Accident Prevention System](https://github.com/rittikadeb/Project-Guidance/tree/vehicle-accident-prevention/IOT(Internet%20of%20Things)/Intermediate/Vehicle%20Accident%20Prevention%20System) | 03. |  [Home Security System](./Intermediate/Home%20Security%20System)
 
 ## Level 3: Advanced 🚀